An officer stands in front of the entrance where Vice President Joe Biden reportedly entered Tuesday morning to see his son at the University of Texas M.D. Anderson Cancer Center. Details of Beau Biden's condition have not been disclosed.

An officer stands in front of the entrance where Vice President Joe Biden reportedly entered Tuesday morning to see his son at the University of Texas M.D. Anderson Cancer Center. Details of Beau Biden's

Vice President Joe Biden, left, with his son, Delaware Attorney General Beau Biden.

Vice President Joe Biden, left, with his son, Delaware Attorney General Beau Biden.

Photo: Charles Dharapak, STF

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Beau Biden

Beau Biden

Photo: NBC, NBC Via Getty Images

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President Barack Obama, center and Beau Biden, Attorney of Deleware, right, watch as his father Joe Biden is sworn in at the ceremonial swearing-in at the U.S. Capitol during the 57th Presidential Inauguration in Washington, Monday, Jan. 21, 2013. less

President Barack Obama, center and Beau Biden, Attorney of Deleware, right, watch as his father Joe Biden is sworn in at the ceremonial swearing-in at the U.S. Capitol during the 57th Presidential Inauguration ... more

Jill Biden, center, wife of Vice President Joe Biden, sits with her sons Beau Biden, left, and Hunter Biden, right, before the start of the vice presidential debate at Centre College in Danville, Ky., Thursday, ... more

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Democratic vice presidential nominee Joe Biden and his son Beau acknowledge the crowd during the Democratic National Convention August 27, 2008 in Denver, Colorado. AFP PHOTO / Paul J. RICHARDS

Democratic vice presidential nominee Joe Biden and his son Beau acknowledge the crowd during the Democratic National Convention August 27, 2008 in Denver, Colorado. AFP PHOTO / Paul J. RICHARDS

Photo: PAUL J. RICHARDS, AFP/Getty Images

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Biden remains in Houston today while son is at M.D. Anderson

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Beau Biden, Delaware's attorney general and the eldest son of Vice President Joe Biden, underwent tests at M.D. Anderson Cancer Center Tuesday, the third hospital he's visited in the past week about an episode of weakness and disorientation.

Jason Miller, a spokesman in the Delaware Attorney General's Office, would not comment Wednesday on Biden's condition or give any further details at this time about his visit to Houston.

Press officials in the vice president's office said Joe Biden will remain in Houston on Wednesday and there were no public events scheduled. No further information was given.

It was unclear exactly when Biden began tests Tuesday. But after a motorcade of six sports utility vehicles stopped at M.D. Anderson's ambulance emergency entrance about 10:30 a.m., a hospital employee reported seeing the vice president walk into the hospital.

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The Bidens arrived in Houston Monday. They dined at D'Amico's Italian Market Cafe in the Rice Village Monday night, and Beau Biden tweeted a photo of his wife, Hallie, and him Tuesday morning that read "Touched by all your well wishes - thank you. Nice evening in Houston w/Hallie; will share update when we have it. -bb."

"The next morning, feeling better, he traveled to Jefferson University Hospital in Philadelphia to consult with his doctor about his earlier symptoms," the statement said. "The attorney general was discharged and spent the weekend at home in Wilmington."

Biden, who suffered what was described as a mild stroke in 2010, is undergoing testing "to investigate the cause of his symptoms," the Delaware Department of Justice statement said.

M.D. Anderson, a component of the University of Texas System, is the state's cancer hospital but draws patients from the nation and world because of its renowned, cutting-edge care.

Officials at M.D. Anderson said they have no information.

Low-key meal

Biden, 44, was elected in 2006 as Delaware's attorney general and is serving his second term.

A former federal prosecutor in Philadelphia, he served in Iraq for one year as a captain with the Delaware Army National Guard. He was considered a front-runner to fill his father's former U.S. Senate seat in 2010, but decided against running for higher office. The attorney general and his wife have two children.

D'Amico's owner Nash D'Amico said the restaurant only had about 15 minutes notice before the Secret Service came in to check out the dining room.

"They called and asked if I could accommodate at table of 15," said D'Amico, who quickly moved a couple of patrons to accommodate the vice president's dinner party.

D'Amico described the hour-long meal as low-key. He said a crowd gathered to greet the party as it exited the restaurant.